Hi,
All,
The kernel version
may be old to most of you guys, but this is what I am doing the tests
on.
Previously I use
uclibc tool chain and compiling everything fine and it runs fine; System V
IPC works, including shared memory works...
The nightmare starts
when I try to use glibc tool chain. I downloaded crosstool and
successfully compiled everything.
However, when I run
it problem happens on shared memory.
What I did for
testing is this:
1) call shmget to
allocate the shared memory
2) call shmat to
mmap to process virtual memory space.
3) call shmctl to
verify everything appeared fine.
4) for testing, just
write couple bytes inside of that memory region.
The problem and also
the interesting thing is:
If without 4)
everything runs fine.
However, once excute
4) or any type of the writing to that memory region, the box will get a kernel
crash later, but not immediately....
I guess the kernel
crashes when kswapd tried to do something, because the oops happens on kswapd with
the following information:
Kernel BUG at
filemap.c:908!
Unable to handle
kernel paging request at virtual address 00000000, epc == 80025ebc, ra ==
80025ebc
But if I do not
excute 4) everything runs perfect without problem.
At now, I am
completely out of clue, wonder anybody may have any ideas and can help me
out??
Thanks
John
